See your battery credit and adjusted project cost. Compare scenarios using caps and liability quickly. Download results and keep records for tax time easily.
| Scenario | Eligible Cost | Rate | Gross Credit | Liability | Usable Credit | Net Cost |
|---|---|---|---|---|---|---|
| Typical | $15,000.00 | 30.00% | $4,500.00 | $4,000.00 | $4,000.00 | $11,000.00 |
| Higher liability | $15,000.00 | 30.00% | $4,500.00 | $10,000.00 | $4,500.00 | $10,500.00 |
| Partial eligibility | $10,500.00 | 30.00% | $3,150.00 | $3,000.00 | $3,000.00 | $12,000.00 |
Numbers are illustrative and may not match your program rules.
Battery credits start with eligible spending and the program rate. Many projects cluster between $10,000 and $20,000 total equipment and installation, so a 30% rate often implies $3,000 to $6,000 in gross credit before caps, limits, or exclusions apply. If you include non-eligible items in total spend, the effective discount falls even when the credit amount stays fixed.
Use line items to separate eligible and non-eligible charges. The calculator applies an eligibility factor, so a 75% qualifying share on a $16,000 eligible base yields $12,000 eligible cost. That single input helps model partial qualification, mixed-use sites, or documentation uncertainty. A clear split also speeds audits, because receipts show which charges support the eligible base calculation.
Gross credit equals eligible cost multiplied by the rate, then reduced by any cap. If tax liability is entered, usable credit becomes the lower of gross credit and liability. For example, $4,500 gross with $4,000 liability means $4,000 usable and $500 estimated carryforward. Caps matter most on large systems; enter them to avoid overstating benefits.
Try several rates to stress-test assumptions. On $15,000 eligible cost, a 20% rate produces $3,000 gross; a 35% rate produces $5,250 gross. With a $5,000 liability, the higher-rate case remains fully usable, while a $3,500 liability creates a carryforward gap. The Plotly curve highlights where usable credit plateaus once liability becomes the binding constraint.
Track invoices, scope notes, and commissioning dates so you can support the eligibility factor you assume. Compare net cost after usable credit against cash flow timing, not just the headline rate. Export the CSV or PDF to keep a dated estimate and revisit it when rates or caps change. For financing, translate net cost into monthly payments and compare with projected bill reductions.
No. It estimates credit amounts from your inputs. Filing requirements, forms, and eligibility rules depend on your location, year, and documentation.
Use 100% if you expect all eligible line items to qualify. Use a lower percentage when only part of the cost qualifies or when you want a conservative estimate.
If you enter liability, usable credit is limited to that amount. Any excess is shown as an estimated carryforward, which may apply in later periods under some programs.
The calculator limits gross credit to the cap you enter. This prevents overstating benefits on large systems where a program sets a maximum credit amount.
Enable the checkbox if you want net cost and effective discount to reflect the full project budget. Leave it off to evaluate only the eligible portion of spending.
The graph varies the credit rate and plots gross credit, usable credit, net cost, and carryforward. It helps you see when liability or caps cause the usable credit to flatten.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.